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(No Model) J. T. MORRIS.

No. 584,697. Patented June 15, 1897.

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lINiTnn STATES PATENT Trice.

LOCK.

SPECIFICATION forming part of Letters Patent No. 584,697, dated June 15,1897. Application filed November 21, 1896. Serial No. 612,926. (Nomodel.)

1b to whom it may concern:

Be it known that I, JOHN W. T. MORRIS, a citizen of the United States,residing at Summerland, in the county of Santa Barbara, State ofCalifornia, have invented certain new and useful Improvements inDoor-Locks, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, whichform a part of this specification.

My invention relates to certain new and useful improvements in mortisedoor-locks which maybe readily placed in position with a minimum amountof chisel-work, the principal plates being circular in general outline,with the result that nearly all the toolwork can be done by boring witha bit, thus largely simplifying the work of placing the lock inposition; and my invention consists in certain features of noveltyhereinafter described and claimed.

Figure I represents a side elevation of my improved lock. Fig. II is anend elevation. Fig. III is a side elevation of the locks cylinder andshowing the flexible connection between the locking-bolt and the knob.Fig. IV represents a side elevation of the latchplate intended to besecured to the door-jamb. Fig. V is an end elevation of thelocking-bolt, showing antifriction-roller journaled to the same andshowing the plate for securing the lock to the door. Fig. VI is a sideelevation of the disk which operates the lock. Fig.VII is an edge Viewof the lock-operating disk. Fig. VIII is an end elevation showing theouter end of the locking-tumbler. Fig. IX represents a side elevation ofthe lockingtumbler. Fig. X represents an end elevation showing the innerend of the locking-tumbler. Fig. XI is a detail view showing thelockingtumbler and the locking-bolt with its flexible connection withthe operating-disk. Fig. XII

represents the coil-spring for holding the tumbler in its properrelation with the lockingbolt. Fig. XIII represents a section taken online XIII XIII, Fig. XI. Fig. XIV represents an end elevation of thespring-guard. Fig. XV represents a side elevation of the spring-guardand rod on which the spring is placed. Fig. XVI is a section taken online XVI XVI, Fig. XVII, showing inner face of the disk on the innerendof the locking-bolt. Fig. XVII represents a side elevation of thelocking bolt and tumbler. Fig. XVIII represents a section taken on lineXVIII XVIII, Fig. II. Fig. XIX represents an end elevation of a gage formarking on a door where the necessary openings are to be made for thereception of the lock. Fig. XX is a side ele vation of the gage. Fig.XXI represents an edge view of the gage.

Referring to the drawings, 1 represents a plate, preferably made ofthree circular portions, the end portions having orifices 2,in whichscrews may be inserted for securing the lock to the door. The centralport-ion is pierced by an opening through which the locking-bolt 3extends, the locking-bolt hav ing two flattened sides 4, whichcorrespond with the opening in the plate 1 and which prevents the boltfrom turning in the plate. The locking-bolt 3 is provided with a centralrecess 5, in which is journaled an antifriction-roller 6.

7 represents a latch-plate intended to be socured to the door-jamb, andbeing of the same general outline as the plate 1, said 1atch-platehaving a lip 8, extending beyond the. outer edgeof the plate proper andbeing slightly inclined, against which the antifriction-roller 6 in theend of the lock comes in contact when the door is being closed. p

9 represents an orifice in the center of the plate 7, into which theouter end of the locking-bolt and antifriction-roller extend when thedoor is closed, thus holding the door in its closed position. Both endsof the plate 7 being the same the plate may be reversed atwill accordingto whichever side of the doorjamb it is desired to place it, there beingcountersunk orifices 10 in the plate for the reception of screws forholding the plate in position. By the circular outline of the plates 1and 7 it will be seen that in placing them in position in the door anddoor-jamb the openings for the reception of the same may be formed bythe use of an anger or hit without resorting to the use of a chisel toany extent, a slight mortise having to be made for the reception of thelip 8 on the latch-plate.

11 represents a cylinder extending back from the plate 1 and inclosingthe lockingtumbler 12. At about midway of the length of the cylinder 11I cut away substantially two-thirds of the same, leaving a segmentalportion 13 with a semicircular plate 14 on its inner end. The tumbler 12is provided with a central aperture 15, through which extends a rod 16.The outer end of the rod 16 is secured to the inner end of thelocking-bolt 3, the tumbler being loosely mounted on the rod 16.

17 represents a chain or other flexible connection connecting the innerend of the rod 16 with the outer end of a flattened bar 18. The innerend of the bar 18 is pivoted by a pin 19 in a groove 20 of thelock-operating disk 21. The disk 21 is pierced with a square opening 22,which fits upon the square knobshaft 23.

24 represents the inner and 25 the outer door-knob. The inner knob 24 issecured permanently to one end of the knob-shaft 23.

26 represents the inner and 27 the outer plates for securing the knobsto the door. The inner plate 26 is provided with a sleeve 28, extendingoutwardly from the plate, said sleeve having an orifice 29, said orificeextending through the sleeve and into theknobshaft 23.

30 represents a thumb-lock movably secured to the plate 26 by means of astaple 31 and having its upper end bent outward and forming athumb-piece 32, its lower end being bent into suitable form to pass intothe orifice 29 in the sleeve 28 and shaft 23. The thumb- .piece, beingmovable in its support, can be readily withdrawn and leave the knob freeto turn. On the inner face of the plate 26 I provide a semicircularprojection 33, partially surrounding the knob-shaft 23.

34 represents a pin placed on the shaft 23, said pin coming in contactwith the projection 33 when the knob has been turned a sufficientdistance, the object of said pin 34 being to prevent a further rotationof the knob than is necessary for the withdrawal of the lock and also toprevent Withdrawal of the shaft from the plate 26. On the inner face ofthe outer knob 25 I provide an extension 35 for the reception of one endof the shaft 23.

36 represents a sleeve on the outer face of the plate 27, which fitsover the extension 35 on the knob. Extension 35 is provided with arecess or groove 37, into which a set-screw 38 may extend in order tosecure the knob to the plate. The shaft 23, resting freely within theextension 35, and the sleeve 36 being of somelength, permits of the lockbeing secured to doors of varying thickness.

39 represents grooves or ways running lengthwise of the tumbler 12,leaving a solid portion 40 extending the full length of the tumbler. Theouter edge of the tumbler 12 is provided with grooves 41 42, extendingacross the end of the tumbler, and with a notch 43, cut out of the edgeof the tumbler, said notch 43 coinciding with one of the grooves 39.

44 represents a disk on the inner end of the locking-bolt, said diskhaving a V-shaped rib 45 on its inner face, said rib being adapted toengage either of the grooves 41 42 on the outer end of thelocking-tumbler.

46 represents a notch in the edge of the disk 44, which corresponds withthe notch 43 in the tumbler.

47 represents a pin at the inner end of the cylinder 11.

48 represents a circular sprin g-gua rd adapted to fit over the rod 16or chain 17 and having a notch 49 on its edge.

50 represents a rod secured to the springguard, said rod being adaptedto rest, when in its normal position, in the extension 13 of thecylinder 11, the outer end of the rod 50 resting in a notch 51 in thesemicircular plate 14 at the outer end of the extension 13.

52 represents a coil-spring placed upon the rod 50, said spring holdingthe spring-guard 48 against the inner end of the tumbler 12.

The spring-guard 48, pressing against the end of the tumbler, holds thetumbler in engagement with the disk 44 by means of the rib 45 enteringone of the grooves 41 42 in the outer end of the tumbler.

53 represents a key-opening leading through the cylinder 11, and 54 anescutcheon to be secured to the outer face of the door with a key-opening 55, there being a like escutcheon and a like opening through thecylinder on the opposite side of the door. When it is desired to unlockthe door, a key 56 is inserted through the escutcheon 54 and thecylinder 11 into the grooves 39 in the tumbler, the tumbler being turnedinto the position shown in dotted line in Fig. XIII, with the pin 47coinciding with the groove 39, in which position the notch 43 in thetumbler will coincide with the notch 46 on the disk at the inner end ofthe look. When in this position, either of the knobs 24 25 may be turnedwith the disk 21, the bar 18 entering into the groove 20 and thelocking-bolt withdrawn from the opening in the latch-plate 7. The lockcan be readily prevented from withdrawal by inserting the key throughthe opening 55 into the groove 39 in the tumbler, the key coming againstthe wall at the side of the groove and turning the tumbler until it isthrown into the position shown in full line in Fig. XIII, at which pointthe groove 39 will be out of line with the pin 47, said pin preventingthe withdrawal of the tumbler and also the lock until the tumbler hasbeen turned back into the position shown in dotted line in Fig. XIII. Asthe lock is drawn backward the spring 52 will be forced against theinner face of the semicircular plate 14, and as soon as the knob isreleased said spring will force the look back into its locking position.1

I am able to save considerable time in placing my lock in position, as Idispense almost entirely with the use of a chisel. As this form of lockcannot be opened or forced back without turning the knobs, it will bereadily ICC IIO

seen that by means of my thumb-lock on the inner side of the door I cansecurely lock the door against the use of any key orother instrumentwhich might be inserted in the keyhole, for even were the tumbler forcedbackward on account of its being loosely mounted on the rod 16 the lockcould not be forced backward with it. By taking out the springguard 48the tumbler and lock may be readily withdrawn from the cylinder 11 incase it is desired to repair the same.

56 represents a'gage having a portion 57 extending at right angles, theportion 57 havinga series of slots 58. lhe gage being placed upon thedoor, the edge of the door may be marked through the slots 58,indicating the centers for the bit, in making the opening in the doorfor the plate 1 and the lock, said gage also having orifices 59 in itssides indicating the points for the escutcheons and knob-shaft.

I claim as my invention- 1. In a lock the combination, of an inclosingcylinder, a movable look, a rod connected with the lock, atumblerinclosed in said cylinder and movably supported on said rod, anextension on said cylinder, a spring-guard, a rod connected with saidspring-guard and a spring encircling said rod, substantially as setforth.

2. In a lock the combination, of an inclosing cylinder withmovablelockingbolt, a rod connected with the locking-bolt, a tumbler onsaid rod, a segmental extension of said cylinder, a semicircular plateat the end of said extension, a notch in said plate, a springguard, arod connected with the spring-guard and having its inner end resting insaid notch and a spring on said rod, substantially as set forth.

3. In a locking-bolt the combination of an inclosing cylinder, a movablelocking-bolt, a rod connected with the locking-bolt, a tumbler on saidrod, grooves extending lengthwise on said tumbler, a disk on thelockingbolt and notches formed in the edges of said disk and tumbler,substantially as set forth.

4. In a lock the combination, of a lockingcylinder, a movablelocking-bolt having a disk on its inner end, a rib on said disk, alockin g-tu mbler having longitudinal grooves, a rod connected with thelocking-bolt 011 which the tumbler rests and retaining-grooves on theouter end of the tumbler in which the rib on the disk may engage,substantially as set forth.

5. In a lock the combination, of a movable locking-bolt, anantifriction-roller on its outer end, a supporting-plate, a cylinder, arod connected with the locking-bolt, a tumbler on said rod, longitudinalgrooves in said tumbler, a locking-pin on the inner side of saidcylinder, a spring-guard circular in form and having a notch cuttherein, a rod on the spring-guard and a retaining-spring on said rod,substantially as set forth.

6. In a lock the combination, of a knob shaft, knobs thereon,supporting-plates, a projection on the inner face of one of said platesand a pin on the knob-shaft adapted to engage said projection,substantially as set forth.

. JOHN T. MORRIS.

Witnesses:

W. II. HANCOCK, R. S. FUTHEY.

